VIDEO: SEN. Dianne Feinstein Talks Petraeus Affair on ANDREA MITCHELL

Sen. Dianne Feinstein, Senate Intelligence Committee Chair, told Andrea Mitchell today that "this is certainly an operationally sensitive matter. But we weren't briefed. I don't know who made that decision," when asked about the committees lack of knowledge of General Petraeus' affair. Sen. Feinstein concerns continue to escalate and said, "it's been like peeling an onion. Every day, another peel comes off, and you see a whole new dimension to this." Below, check out the interview in full on Andrea Mitchell REPORTS.